Raymarine c97 - Page 173

Radaroverlay
YoucanoverlayRadarandMARPAfunctionsinthe
Chartapplicationtoprovidetargettrackingorto
helpyoudistinguishbetweenxedobjectsandother
marinetrafc.
YoucanenhancetheuseoftheChartapplicationby
combiningitwiththefollowingRadarfeatures:
•MARPA—TheMiniAutomaticRadarPlotting
Aid(MARPA)functionisusedfortargettracking
andriskanalysis.MARPAtargetsareonly
availableintheChartapplicationwhenHeading
dataisavailable.WhenMARPAtargetsare
beingtrackedtheyaredisplayedintheChart
applicationregardlessofwhetherRadaroverlayis
switchedOn.AssociatedMARPAfunctionscanbe
accessedusingthemenu.
•Radaroverlay—YoucanoverlaytheRadar
imageoveryourChartimageallowingbetter
distinctionbetweenxedobjectsandothermarine
trafc.Forbestresults,switchonRadar-Chart
synchronizationtoensureradarrangeandchart
scalearesynchronized.
RadaroverlayusingHeading
RadaroverlayrequirestheuseofHeadingdatafrom
aconnected:
•Evolutionautopilotsensor(suchastheEV-1or
EV-2,or
•Fluxgatecompass
WithHeadingdataavailablebothRadaroverlay
andMARPAtargetscanbedisplayedintheChart
application.
ThesystemwillalwaysuseHeadingfortheoverlay
whenitisavailable.
WhentheRadaroverlayisusingHeadingthen
‘OVL’isdisplayedinthetopleftcorneroftheChart
application.
RadaroverlayusingstableCOG
RadaroverlaycanbesettouseCOGwhenHeading
dataisnotavailableorislost.InordertouseCOG
fortheoverlayitmustbestablei.e.theremustbe
sufcientSOG.
WhenusingCOGfortheoverlayMARPAtargetsare
notavailable.
IfHeadingdatabecomesavailablethentheoverlay
willautomaticallyswitchbacktousingHeading
instead.
WhentheRadaroverlayisusingCOGthen
‘OVL-COG’isdisplayedinthetopleftcornerofthe
Chartapplication.
Note:WhentheoverlayisusingCOG,
misalignmentoftheRadarandChartimagescan
occurduetotideandcurrenteffects.
EnablingRadaroverlay
WithaconnectedRadarturnedOnandTransmitting,
fromtheOverlaysmenu:(Menu>Presentation>
Overlays)
1.SelectRadarsothatOnisselected.
TheRadarOverlaySettingsmenuoptionwill
appearintheOverlaysmenu.
2.SelectRadarOverlaySettings.
3.SelectOverlay.
4.AdjusttheOverlay‘sOpacitytotherequiredlevel.
Note:Radaroverlayisnotavailablein3Dview.
UsingCOGfortheRadaroverlay
COGcanbeusedfortheRadaroverlaywhen
Headingdataisnotavailableorislost.
FromtheChartapplication’sOverlaysmenu:(Menu
>Presentation>Overlays)
1.SelectRadarw/oHdg:sothatOnishighlighted.
TheRadaroverlayisnowsettoautomatically
switchtouseCOGdataifHeadingdataisnot
availableorislost.IfHeadingdatasubsequently
becomesavailableagainthesystemwill
automaticallychangebacktousingHeading
data.Analertmessagewillbedisplayedwhen
switchingtoCOG.
Note:WhentheoverlayisusingCOG,
misalignmentoftheRadarandChartimagescan
occurduetotideandcurrenteffects.
AccessingRadarcontrolsfromtheChart
application
FromtheChartapplication:
1.SelectMenu.
2.SelectRadarorRadar&AIS.
Note:AnychangesmadetotheRadaroptions
fromtheChartapplicationwillbeappliedtothe
Radarapplication.
Chartscaleandradarrangesynchronization
Youcansynchronizetheradarrangeinallradar
windowswiththechartscale.
Whensynchronizationisswitchedon:
•Theradarrangeinallradarwindowschangesto
matchthechartscale.
•‘Sync’isindicatedinthetopleft-handcornerof
thechartwindow.
•Ifyouchangetheradarrange,inanyradar
window,allsynchronizedchartviewschangescale
tomatch.
•Ifyouchangethescaleofasynchronizedchart
window,allradarwindowschangerangetomatch.
Synchronizingthechartandradarrange
Inthe2Dchartview:
Chartapplication
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